The real wasmRtcOffset a single model carries, or null if it has none
(still meshed raw). The single-candidate counterpart to
chooseSharedRtcOffset: callers that need one specific model's own
anchor — e.g. to decide whether it just introduced the federation's
first real anchor — read it through here rather than destructuring
geometryResult.coordinateInfo.wasmRtcOffset themselves.
The real
wasmRtcOffseta single model carries, ornullif it has none (still meshed raw). The single-candidate counterpart to chooseSharedRtcOffset: callers that need one specific model's own anchor — e.g. to decide whether it just introduced the federation's first real anchor — read it through here rather than destructuringgeometryResult.coordinateInfo.wasmRtcOffsetthemselves.